Side by Side Comparison of: AcuRite

I've tied the outdoor sensor in the shade of a tree-limb ... and the temperature results look spot-on to me i.e. the temperature seems consistent with local weather reports. Here in WY, I've seen some amazingly (to me) low humidity readings ... as low as 1%; `don't know if such low humidity readings could be accurate (or not) ?

The inside display fonts are large enough to read without glasses (e.g. easy Readers) ... NICE ... and from a fair distance, say 10 feet, for example.

So, I'm happily entertained with this inside/outside weather reporting ... and, yes, I'd buy another, if something happened to it - no hesitation.

It is Summer now and I have been using this device since Winter. Every day I look at the inside and outside temperature (and humidity) to determine when to "open up" the house to fresh air. I have had no issues with the accuracy as I have compared often to what other thermometers have shown. The batteries seem to be holding up fine. And it was so easy to install. I am very delighted with it and each day I look at it I feel grateful for the team of engineers and marketing people (and Amazon) who brought this useful, reliable device into my life to allow me to be more efficient and operate more intelligently.

Nope, it doesn't have a backlit display - but I turn on the lights when I walk into the living room anyhow.
Nope, it doesn't have the time on the display - but it's sitting in a room with a clock on the wall and the time is also visible on the VCR.
This shows in numbers large enough to be seen from my recliner the temperature and humidity for both inside and out - EXACTLY what I wanted. Nothing more, nothing less. Outside sensor is about 40' away on the other side of a brick wall and hasn't missed a beat.

I like it! It's bigger than I thought it would be (I didn't check the specs), but that's ok, the numbers are very clear. Outside numbers are larger, perhaps to emphasize that it has an outside unit?

It's reasonably accurate. I have several other temp/humidity devices; the AcuRite is within 2 deg on temperature and 5 points on humidity, exactly what I would expect on a unit at this price point. (Higher accuracy is costly.) The real challenge is locating the outside sensor so it is in the air, away from the house, out of the sun, and protected from rain. My outside sensor got wet a couple of times, but seems to recover after a few hours.

I had some initial problems getting it set up, but my call to customer service was quickly answered, and I finally got the batteries installed correctly (hint: read the manual!)

Update, July 2017:
Just returned from extensive European travel with this unit. Set it up in dozens of places, always worked well (so long as I could avoid direct sunlight, and rain!). Got the outdoor unit wet a couple of times, but after a day of 99%RH readings it worked ok. Replaced the batteries after a year. Now I got it back home and it still agrees with my other weather instruments.

I primarily wanted this unit because of humidity feature. I had just installed a whole house humidifier on our furnace and wanted to be able to monitor its performance. The negative reviews gave me some concern as they involved accuracy and more notably the 99% humidity readings. When I received the unit I installed the batteries and set the base unit and sensor side by side on a shelf and after an hour or so the indoor and outdoor readings matched. I mounted the sensor on the side of the house in a spot where the sun never shines and I fashioned a small "awning" just above the unit to protect it from dripping. The first morning I observed 99% humidity. As we live in a coastal area so there can be fog and this fall there has been lot of evening/morning dampness in the air the high reading should be expected. But I brought the sensor back inside just to check and after a while it was again matching the base unit. I sometimes compare the humidity and temperature readings to the Weather Channel app and they're always quite close (I do not expect them to match exactly just because of relative locations).

This has been great for monitoring my reptile enclosure/vivarium (IJ Blue Tongue Skink). My lizard knocked it into her water dish and it sat fully submerged for at least several hours. When I saw and pulled it out, the screen was blank and water was pouring out of all the holes. I took out the battery and let it dry out for 5 days. Popped the battery in, and it works! I now have it wedged so she can't move it around. (I used another gauge and a temp thermal gun to verify it's still giving accurate readings.) It's also helpful to know the highs and lows for the past 24 hours, since sometimes it can really vary. This has helped me maintain a more consistent level of humidity. Would recommend for anyone needing to monitor tropical/humid reptiles or amphibians.

works great - very accurate and rugged tooI keep one in a grow tent and another clipped to the side of some er home grown herb bucket so I know how the plant is as well as the tent as a whole. dropped on the floor, dropped in mud and they still work great.I think I've just been lucky with my misuse but my special orchids bloom like crazy because these guys let me know exactly how my micro environment is doing.too big to use in 1qt canning jars tho.

I have tested this device against my other gauges and it has proven accurate, it is easily read, the memory of highs and lows are helpful when you're monitoring a room that may have issues or maintaining a walk in humidor or a room you want particularly dry like a server room.Another bonus is that the device comes with a clip that also has a magnet adhered to the back. I have mine stuck to a filing cabinet in a room I need to stay consistently dry.The price was great, have I any further need for a room hygrometer I will certainly be buying this one.

Good product bought 4 all were the same, for $10 great deal, a very good humidistat would cost $100. I compared all 4 together after 2 hours they were all the same, even though two are off by one it is more like .2 after the photo I started to move one when I came back they were all reading the same.

We purchased this AcuRite monitor to see how much of a temperate difference we see in our master bedroom (which has poor insulation) and the rest of the house. During the first week I hung this unit next to our house thermometer and found it to be constantly one degree lower than our house reading. I have not way of knowing which one is more accurate, although I did notice that they moved in sync with daily fluctuations. It was very nice seeing what the daily fluctuations were, especially as we have to dogs and could not monitor what the house temperature fluctuations were while we were gone to work.Subsequently, we moved the monitor to our master bedroom. Curing the colder spring months we found out master bedroom about 2-3 degrees cooler than the rest of the house. It was reassuring to know that the difference was not greater. During summer months, we have noticed a 3-4 degree increase in temperature in the same room (compared to the listed temperature on our house thermometer. Again, during summer, the temperature move in sync. We do not use the AC much, so were see enough temperature variations to make this comment worthwhile.

I purchased two of these as I wanted something digital and I liked that it recorded the highs and lows for each: humidity and temperature. Right out of the package they both read identical humidity and temperature which was great. I then brought them to my work and put them in a stabilty chamber to test against a calibrated expensive humidty guage at 63.3% RH and 25.x C. Both units measured within a single percent of RH and ready 25 C. I then calibrated the units in a nitrogen filled instrument with a calibrated unit. The calibrated unit read 0.0 % RH while both units read 16. I figured out that these units DO NOT work below 20 % RH and instead display 16 %. I then tested them in open rooms compared to a calibrated unit at 20-30% RH and these babies read within a single unit of % RH and about 0.5 degrees C. I have no way of calibrating them higher and not sure how high they will read accurately but I'm curious to see what they'll read outside in the rain. Otherwise they are great units for the price.

Outdoor unit's humidity reading way off (more than 5%, closer to 10% off), usually reads higher than actual rh in environment. Considering returning item. Placed product next to outdoor sensor in living room and next to another accurite stand alone unit and got very different readings from all 3 units humidity wise, temp seems to be a little more accurate.

Update: I changed the location and now it seems to be reading humidity more accurately. I've decided to keep it and now feel like I can recommend this product. Just be patient and move the probe around to a different location if you feel like it isn't reading accurately.

I have had this unit since July 2015. I LOVE KNOWING THE TEMPERATURE AND, IN FLORIDA, THE HUMIDITY IS EVEN MORE IMPORTANT!

Worked great once i found a spot out of the sun and rain. Before...when the sun hit the sensor the temps were about 5 - 10 degrees too high.

Now after about 18 months the unit locked on a temp and humidity, I checked the sensor and it looks like the battery oozed out? Swapped in new batteries and now the sensor seems dead, maybe the batteries ruined it? So I was about to buy a replacement sensor (model 00609A1TX - see Amazon AcuRite 06002M for $12.99), then I see the entire unit for $21.99...heck I figured I would get both receiver and sensor, maybe the new sensor can feed both the old receiver and the new receiver...one in the kitchen one in the bedroom. We will see...

Pretty simple unit that worked immediately... You just install a couple of batteries in both units and it starts working automatically........could not be too much simpler.........

Hardest part is figuring that the larger display unit does take batteries, because the stand unit pops off to reveal a battery compartment.....

I have several AcuRite monitors and they are always pretty accurate, so I am assuming this one will be too........

I will be upgrading this review to five stars if the unit is still working well within a couple of months, and has not burned out too many batteries(AcuRite monitors are generally very very good at conserving battery life)......

9-19-15.....After a couple of weeks this things has been working like a charm.....

it is quite accurate, like all AcuRite meters seem to be, I have not had any problems getting accurate, reliable, temperature and humidity information from outside remotely.....

This weather monitors belongs in the weather monitor Hall of Fame......

Replaced an older version of this unit that had lasted 8+ years. Love the new version. Easy to set up and link the receiver, nice large clear display and I like the fact that it shows the trending status of both the temp and humidity readings. My remote transmitter is located under a deck overhang and I suspect it throws off the outdoor humidity reading a bit, but not a deal breaker for me. I also don't like the fact that the remote doesn't display the temp on it any more like the old one, but overall a great unit for the price

After reading some of the reviews before purchasing, I was a little hesitant in purchasing. I have never been totally happy with any similar gadget, but have to say this product for the value works just fine. Like most all products. You do have to find a sun light protected area for adequate information. I have moved the receiver around inside the house without issue. I also unlike some others, found setup extremely easy.
ADDENDUM May 30 2017 Indoor thermometer still works. Exterior thermometer no longer works. Changed the batteries in both indoor receiver as well as outdoor transmitter with no luck. Do remember changing the batteries once before without problem. Kept the outside transmitter in a maple tree under cover as best as possible. Not sure if having it somewhere totally protected from rain/moisture would have helped or not. I'm thinking probably, but the position I did have it anchored was in a place where rain would not hit it directly. Having said all that, I changed my product rating from a five to a four only because of it no longer working. I would still consider it a four as for 25 bucks, I pretty much got what I paid for and when it was working, I found it to be pretty reliable with the temp and humidity readings. Hope this helps with your decision. Sorry so lengthy.

Needed something inexpensive to monitor partially finished, below grade basement. Have a dehumidifier set to run automatically in the space but no way to ensure it was operating +/- to setting. After two weeks of acclimation, the two still don't match but they are w/in ~ 5% of each other. That's all I needed to have confidence I wasn't allowing mold, etc. Can't be sure which is more accurate but this gets me in the ballpark. If you need pinpoint accuracy this may not be the unit for you.

Seems accurate, works and functions fine. I would recommend the ThermoPro TP50 over this unit though because i like its design better, its more compact, cheaper, and comes with a battery. This unit is also unable to reset the ranges whenever you want unlike the ThermoPro TP50 that can do that.

Considering the low price, this is a great little device. When I first got it, about 60 days ago, I was extremely disappointed at the inaccuracy of it. Comparing it to other devices, the humidity and the temperature were each in error by close to 10 percent. However, I discovered that it was because I used a NiMH rechargeable battery, which is lower voltage than an alkaline battery (1.5v for alkaline, 1.25 for the NiMH I used). After 42 days, the device shut itself off completely; no "low battery" warning of any kind. When I replaced the battery with an alkaline AA cell, the temperature and humidity readings matched other devices closely. I experimented, trying different NiMH batteries, making sure they were fully charged. In each test, the temperature and humidity readings were off by about 10 percent when using a NiMH rechargeable battery, and the readings were accurate when using an alkaline battery. I would give this device 5 stars if the seller gave some information about the sensitivity to voltage; but they do not (as of December 2015).Another experiment I conducted with this device was to place it in a plastic bag with a small packet of desiccant in the bag. The humidity reading did in fact drop quickly, and matched the readings of tests I conducted with other devices. When I buy herbs, I place them in double-zip bags with desiccant to help preserve freshness and to prevent mold. But I always wondered how much difference the desiccant really made, and how many packets would be required to significantly lower the humidity inside the bag. It turns out that one 10 gram packet inside a 1-quart zip-lock bag lowers the internal humidity to below 10 percent. The desiccant packets can be dried periodically in a low-temperature convection oven, and reused. The AcuRite device is small enough, and easy to read while inside the bag, so is helpful to me for gaining some data to help keep my herbs fresher.

UPDATE - This helped me with adjusting the temp of my fridge (I do NOT recommend GE, check consumer reports at the library). Also adding a few full gallon jugs of water to the back of the fridge helped lower the temp swings that happen when you open the door (AcuRite keeps track of the lowest/highest temp for maybe 24 hours). Read up but it's probably not good to put easily spoiled items in the door and maybe the top shelf (depending on temp settings, fridge quality, etc)Original -I'll update later. For now it works fine after surviving some USPS brutality (you'll need an AA battery). When you turn it on it will SLOWLY start lowering the # on the temp display if your house is cool, I just assume it's taking its time to be more accurate. The display temp eventually matched my home's digital A/C temp setting. I learned that my A/C lowers the humidity a little too much. I hear plants can help that a bit, I recommend spider plants and snake plants for better home air quality, not sure about their effect on humidity though.

Very nice little hygrometer.With any hygrometer you should check the calibration if accuracy is a concern. Many can be off by 3-5% - not critical in some cases, but definitely critical in precision acoustic instrument building as I do.Checking calibration is simple - I follow the directions from http://www.hermitcrabassociation.com/pages/calibrate.html" A simple, easy to do at home means of calibrating hygrometers uses standard salt and a sealed container. Table salt, when used properly, will maintain an exact 75% humidity in a perfectly sealed environment. So, to do this, you'll need three items. First, obtain an airtight container such as a see-through tub with a tight fitting snap-on lid (the kind usually found in most kitchens). Alternately, a heavy-duty zip-lock bag will do. Second, you'll need about a teaspoon of salt. Third, any small, shallow open container is needed (to hold the salt in) such as a screw cap from a plastic bottle.Place the salt in its small container and add a few drops of water to moisten it. Don't dissolve it yet. With just a few drops of water, you'll get what you need, which is damp salt. Next, carefully place the salt in its small container, along with your hygrometer, into the airtight container. Please do not get any moistened salt on the gauge. Also, check to see that the starting point (current reading) is anywhere in the 40% to 80% range.Seal the container tightly. Note: if you have any doubt as to whether or not it is a perfectly sealed environment, double-it-up by putting it in a second container, or into a second baggie. Do not try to remove the remaining air trapped inside. Now, wait for at least 5 or 6 hours until the environment has stabilized. Do not open the container. Read the gauge's humidity % level. It should be exactly 75%. If it is not, note the deviation as being the amount your hygrometer is out of calibration. If for example, it reads 68%, the gauge is 7% low. If on the other hand it reads 80%, the gauge is 5% high"

Cheap, works like expected.Has fridge magnet on the back, belt clip, and desk stand.Reads humidity very clearly, and temperature.Only star off, is no 'reset' button.You'd have to take out the battery for a second, to get the numbers to reset (highs and lows in humidity and temps).It also has a Celcius/Farenheit button in the back, to switch temperature readout.It also has an indicator (little house on the top right) to indicate if humidity is too much or too low.50% humidity is ok.Lower, and some people get a dry throat feeling.Higher than 90 and the air feels, and smells moist.The readout frequency updates about every 15 seconds. When I blew in the vents, it took the device about 1 minute to come to a stop (in rising humidity), so it doesn't work immediately.Can't tell how long the battery will last, and a last con would be that it has no backlight, and no alarm/timer built in (you'd think for a small device like this, they would incorporate a clock, as well as a weather predictor?).

I had high hopes but was somewhat disappointed. 3 old fashion, mercury thermometers all show the same outdoor or indoor temperatures, Th AcuRite 00611A3 is consistently 2 degrees higher. In addition, the design is such that reading the numbers in ambient lighting is disconcerting. It requires direct lighting, such as bright room light or sunlight from a window. If it had back lighting built into it, that would be a good thing.

I've only had it for something more than a week but I like it. It was simple to set up and appears to give good readings (I only use it for temperature, most cheap humidity meters are very inaccurate). I had a much more expensive Oregon Scientific gadget of this type. It lasted about 15 years but it was a pain to maintain (rhyme not intended). I have hopes this one will not need the batteries replaced as often.

UPDATE: It started giving impossibly high outdoor temperature. Their tech support asked what kind of batteries I was using. I said it was these (AmazonBasics AA Performance Alkaline Batteries) Amazon batteries. She said that's your problem. No house brands are acceptable, only well known name brand batteries can be used in the unit. I replied, okay I have two name brands of heavy duty non alkaline batteries. No, those aren't acceptable either. Finally I then said,. I have three name brands of NiMh rechargable batteries. No, you can't use rechargeables either. I probably have 40+ AA batteries of various brands around the house but, according to her, none are usable in this unit, and I have to drive to the store and buy more batteries. Just to top this off, batteries need an expiration date that's 6 years out. This is absurd ! So, I'm lowering my rating from 5 stars to 3.

PS I would have inserted a link to the Amazon batteries above, but apparently Amazon doesn't know they sell Amazon batteries.

I'm not sure if this one is going to work. I bought this for my father a couple of weeks ago to replace a much older AcuRite digital thermometer that was failing. It was easy to set up of course, but I have a bad feeling that this is a bad unit, for the indoor humidity is stuck at 29% which doesn't line up with a manual humidity gauge sitting next to it. Were it that low, there would be frequent static shocks from the carpet as well as a few nosebleeds. The outdoor temp and humidity appear to be just fine and the indoor temp is also accurate. It's just the humidity indoors.

I think I will remove the batteries to 'reset' it, if that is even possible, then set up again and see if that helps. If not, I suppose it will go back. Then will raise or lower the rating.

Have had this unit for about a year and a half and have been pleased until recently when the outside readings stopped working. I have the outside unit mounted on the inside of my front porch eve - completely protected from elements. Changed batteries in both units which didn't seem to help. Was about to throw it away but decided to open up the outside unit and discovered that one of the leads to the battery was detached and somewhat corroded looking. Quick soldering job solved the problem and I'm back up and working now. Like the overall appearance and seems relatively accurate when working, rating reflects my disappointment in overall quality.

Poor calibration:
Even when the remote sensor is sitting right next to the base station, the indoor and outdoor temperatures are off by a degree or two.

Uninspired support:
I called support to ask if I could recalibrate. I was 17th in line. After five minutes or so, I'd only gotten down to #10 in line, so I opted to have them call me back. "without losing my place in line!" They didn't call back. Approx 2 hours later, I remembered, and called them again. They'd already closed. (Support til 5pm Central) No option to leave a message. Lame. ...To their credit, they did eventually call back that same day. Support was friendly but not helpful.

Poor documentation:
Support told me that my degree or so of discrepancy was within the +/-2 degree calibration present in "all thermometers".
Neither the manual nor product listing mentions this.I call BS, anyhow. There are plenty of more diligently calibrated thermometers out there.

Poor readability:
If the lighting is not perfect, it's difficult to read both temperatures from some angles when only a few feet away.
I would not purchase this item again. I use one other AcuRite item and while it's nothing to write home about, it's okay, so I'm not totally severing consumer/company ties ;)

...But, after living with it for a few months, I added a couple more stars. Why? I got over the fact that it's poorly calibrated. I don't even remember which one is colder/hotter than the other. I've just resolved to be okay knowing I'm somewhere in the ballpark when I look at the AcuRite 00611A3.

It seems fine but I have four sources of humidity readings in my basement (two dehumidifiers, a "weather station" and this one, and they vary by about 30 degrees from high to low in the same area, with no two readings even close... so I have no idea which is the most accurate. This reads somewhere in the middle of the others. I like the fact that it gives the high-low range on temp and humidity, in addition to the actual (?) readings for each. I just adjust the dehumidifiers for how it "feels" there.

These are great! However.. they need better calibration. I bought quite a few of these because they work out well for a quick glance of controls in the garden. Having five of these lined up right next to each other they all gave a different reading. Not way off, but enough if you want a more accurate readings. For me it's not going to stop me from using them but I do think they could still be closer in calibration.

EDIT: Stopped working after about a year and a half of just sitting on a shelf. Bottom of the screen went blank, and fresh batteries didn't help.These things are really handy to have around the house. We burn wood in the winter, which necessitates using a humidifier to keep the air comfortable. This little unit lets us monitor how cold the house gets overnight, as well as the humidity level. It's small and can stand on its own, so we typically move it from room to room to make sure heat is getting circulated properly. This coming winter we'll probably order another one or two.

Good points: One unit read the correct temperature. The other unit was low by 2°F (1C). The RH on both units was accurate and responded quickly. The display is easy to read although most people expect the largest number to be the temperature, instead, that is the RH.Bad: The unit only works in whole numbers (integer) degrees Celsius. It then converts the temperature into Fahrenheit using those integer Celsius values. Some the temperatures are roughly displayed in 2°F steps. Most people want something with a tenth of a degree Fahrenheit reading. I hated it so much I gave one unit away. The other unit is only used for the RH reading.

PROS:- Affordable- Easy operation- Allows for the use of rechargeable batteriesCONS:- No backlit options. At nights, it is not possible to read the values.- Inaccurate reading and slow to reflect changes. Although my application is to keep an eye on the humidity of the space where my parrots are kept and so super precise readings are not required, there are discrepancies between identical units and in general by several stops in compare to other models. Some have reported drilling holes to increase air circulation for faster adjustments to the reading, but that is too much of a hassle.- I find it valuable to have a clock and date displayed as part of the panel.

I would love to give this a 4 or 5 star rating. The price is right. The temperature reading is pretty close to accurate, which is all I really wanted from this. I would agree with a lot of other reviews that point out the Humidity reading is hit or miss. I have two of these. I sat them side by side for a few days. The temperatures always agreed, but there was typically a 5 or 6 percent different humidity reading between the two. If one read 60%, the other read 66%. I live in Florida - it is alway humid. I really didn't buy these for the humidity information. However, if that is what you need, these may not be for you.

I bought this some time ago, and the outdoor unit did not seem to work. I didn't feel that it was fair to complain to the seller, since my patio faced west and it was close to impossible to situate the sensors as suggested.
I moved into a new home this April and the outdoor unit still doesn't work -- and I did change the batteries.
The inside display appears to be accurate -- but not worth much to me, since I can look at my thermostat!

Loved this thermometer for the first 8 months. We placed the outdoor sensor on a tree in a relatively protected area. It was very accurate. However, after winter, it stopped working. I'm not sure what happened, if it was the cold weather (although we had a relatively mild winter for Michigan), or just it went bad. Now the outdoor reading for temperature is consistently at least 5 degrees off, sometimes a lot more. And the outdoor humidity will say 1% when it's raining, lol. Changing the batteries did not help. As much as I want to like this product, it is not worth it in the long run.

I have only had this item for one day but accuracy is a concern. I placed the indoor unit and outdoor sensor next to each other on a table indoors. After 12 hours the temperature readings are within two degrees. Not so bad. The humidity however had greater variation. The indoor read 50% and outdoor 55 to 56% percent. This morning I took the outdoor sensor outside to see how it compared to various sites that report weather conditions for our town. Much bigger variation here. Multiple local sites were reporting around 80% RH while the weather station reads 58-60%. So when testing indoors the outdoors sensor was reading 10% higher than the indoor unit. Outside it is reading 25% lower than local conditions.

Would love it, except the remote sensor seems to chew through batteries on a 1 to 2-week basis. Remote is under the house in a crawlspace, directly under the indoor receiver, separated by 4 feet of air and 2 inches of plywood. I thought the first quick battery death was because I used old batteries. Second set, I checked before loading and they were green all the way. Noticed after a couple of weeks that the numbers on the "outside" sensor hadn't changed in quite a while, then noticed the remote sensor icon on the main receiver was showing "no bars". Replaced batteries again, with known good new batteries and this time noted the date. Noticed today (10 days later) that the numbers hadn't changed for the remote sensor for a couple of days, then looked more closely and saw the remote display on the main receiver at zero bars again. Peeked under the house at the remote and sure enough, no red LED blinking to indicate the unit is transmitting. Maybe I have a defective remote sensor? Don't see a way to contact seller (Amazon) for this order. Will put in new batteries again tomorrow and see if the 8 to 14 day life span continues.
Update: 3 months later, remote sensor is even more "hungry" for batteries. Now a fresh pair lasts 3-4 days. Called Acu-Rite number on the warranty info. Started at #15 in queue, finally got a rep after 40 minutes on hold. Will be shipping a replacement remote unit under warranty.

I bought this as a Christmas gift for my husband, and it worked well for about 6-7 months. Then, the batteries wore out. I replaced with fresh ones, and have not been able to get the outside temp and humidity to work since. I've tried all their troubleshooting tips multiple times with no result. There's no email to contact the company; it's past its return date; no 'contact seller' link on Amazon, and the phone number either says it's not in service due to technical issues, or I'm placed on a long hold line. (The best I ever did was #28 in line.) I've left callback numbers, and tried intermittently to call, but no one can sit by the phone for hours and days waiting for a call. If the end of the day comes while you're still in line, you just have to start over. The product is cute, when it works, but the support is terrible, and after roaming their website looking for other ways to contact them, it sounds like most of their products aren't that reliable.

I bought this to monitor temperature and humidity under my plant lights. Worked fine for a while, then the second number on the thermometer faded so that it can only be view from an angle. So something in the device display is not working properly. I can see no visible damage to the display Everything else continutes to work. New batteries did not help. I used this under my plant lights to monitor temperature and humidity....so perhaps moisture or heat caused the problem.

It works for what i wanted.It seems to skip a degree though. I usually read 73-75-77, never see 74 or 76.But it wasnt needed for it's precision, and works for what i wanted it to.EDIT: Bought another that is more precise, to compare. Watching a climb of 75 to 77 degrees, this monitor stayed at 75 the entire time. Not very accurate. Only recommend if you are not worried about a degree or two of separation. Not what I wanted though.

I bought this a long time ago and it never worked, it would say 65 degrees f and ~25% all the time no matter what the temperature or humidity was. Clearly broken, but it was so cheap I wasn't going to return it.Recently I had it lying around and decided to open it up and see if there was anything interesting going on inside and lo and behold, I found a glaring problem. One of the legs of the temp/humidity sensor itself was never soldered on. There was solder on the solder pad where it should have been attached, but the leg was up and off to the left, nowhere near the pad.So I heated up my soldering iron and attached the detached leg. The monitor now works properly as far as I can tell. It's responding to temperature changes and humidity changes, though it's very slow to respond and I can't vouch for its accuracy yet.Bottom line, it's a poorly manufactured product, but if you have issues with it like I did, try opening it up and checking the solder joints. You might be able to fix it pretty easily.

I bought the AcuRite 00613 Indoor Humidity Monitor due to its being recommended at another website. For the past couple of weeks I have had the AcuRite sitting next to a Fischer synthetic hair hygrometer - the least expensive, higher quality hygrometer I had been able to find previously. With my Honeywell evaporative humidifier on during the nights and off during the days, the AcuRite consistently reads about 13-15%age points less than the Fischer. I actually have two Fischers, and the second Fisher (usually in another room) is currently reading 3%age points lower than the first Fischer as they sit side by side. Still, that is a 10-12 point difference. I do not currently own a sling psychrometer (one of the most accurate measures of humidity), so I can't be certain which hygrometer is the most accurate, but I do know I'd be putting my money on one of the Fischers. Also, after the first week of using the AcuRite with its very small slotted vents, I drilled 20 holes in the plastic case to promote air circulation. It made no significant difference. I will note that the unit is very responsive to changes in humidity - just breathe on it and the numbers rise quickly, just, I suspect, not very accurately.

My house has a weird humidity issue looks like. Disclaimer: My house is in a flood zone and we can see up to 12 inches of water in the crawl space sometimes. Yes, it scary!That said, I'm told that if you run the heater continuously; which is the case in my house as my wife is always feeling cold, the humidity falls to desert level conditions which would mean under 25%. The opposite happens in my house. In winter the humidity goes up when the heater is running continuously. A co-worker suggested that if there is lack of humidity, then it might be drawing humidity from some other source, which in my case would be the crawl space. But that theory does not hold good for the upstairs bedroom where the humidity goes up as well with running heater.Anyways, I'm sort of convinced this product is not doing what its supposed to be doing unless someone can tell me otherwise. So, I told Amazon customer service that I would like to return this. So, they sent me another one for free and told me to toss the first one in the garbage. The second one is way off as well...on the higher side. See the picture of both of them side-by-side showing different readings. They were in the same place together for quite sometime before I snapped the picture. The color variation is due to one being closer to the cabinet than the other. They are consistently showing different readings.

I purchased this hygrometer to use inside a terrarium in order to monitor temperature and humidity. Unfortunately, it only worked for a few days before it began malfunctioning, the characters on the display fading away until they were completely gone. It appears to me that the device could not handle the high humidity conditions of my terrarium.I like the design and features of this Acu-Rite device, but if it can't handle humidity without breaking down it's not much help to me.If anyone knows where I can get a device like this that can handle high humidity environments (90%+) please comment below as I haven't had much luck finding a reliable hygrometer.

I suspect this thing just makes up numbers and displays them.

I placed the outside sensor right next to the display and let it sit for an hour. It is ~72 degrees inside my house.

The outside sensor says 45 F and the inside sensor says 68 F.

I have tried removing the batteries from both parts, tried placing it in different locations, using different batteries, etc. and it just does the same thing.

Complete waste of money. Do not buy.

My first unit of this same model lasted 2 years until the transmitter failed. I assumed I had bad luck and bought a new one after noticing it had gone on sale. The new transmitter also failed after 10 months despite (both) of them mounted outdoors protected from the elements. After 2 days of troubleshooting and following their online instructions I determined it simply failed and called for a replacement under warranty. I waited a full hour on hold only to finally reach a customer service rep who didn't like it that I wouldn't give him my email address. I became frustrated with his attitude and decided that for $9.95 (what I paid) that I didn't need to subject myself to this and can look for a different brand. I did enjoy the display unit but the product quality appears poor if it doesn't last 2 years.

If this device works, it will be a great little thing to have. But my unit only worked sporadically. After the first night, the display just disappeared. New battries didnt help. After several different tries, it seemed that there was a lose connection somewhere. I tightened the covers, the display came back. But after 2 days, the same problem happened again. Fixed it, happened again. What a shame. I am going to try a replacement and hope it works the second time around, but otherwise i am going to have to ask for a refund. This is too bad. It would have been a great device to have around the house to keep track of the temp and humidity.

I am very disappointed with this product. We purchased this to monitor the temp and humidity in our living space and in our son's room. When I initially set up the system, I followed the instructions. Put the batteries in, screen turned on- signal was good and it seemed like it was all set. I sat the display and wireless sensor on the counter in the kitchen about a foot from each other and of course got pulled away for some reason or another. When I came back, the two readings didn't match. If the display takes a reading and the sensor takes a reading right next to each other, shouldn't they both be reading the exact temperature and humidity. Everything I have tried to fix the problem has not helped. I have put the wireless sensor in another room and the outdoor sensor consistently shows an extremely lower humidity value. Next step is calling the company but if they can't help, I want my money back.

first review : there are micro climates where i live so one area can be completely different than the next adjacent area in terms of temperature and humidity, which was driving me a bit mad seeing as how i was testing out new portable air conditioner units. after getting tired of using the meat thermometer to gauge temperature changes i got this w/same day delivery. it was delivered same day which was a treat, but the outdoor unit seems to be on the fritz when i woke up this morning reading 80% humidity when every weather station nearby said it was at most 65%, the temp said it was 89 degrees when again every weather station nearby said it was at most 75 degrees. called amazon asked for a replacement, they said they couldn't get it here until tomorrow but when i told them i saw on the site if i bought a new one they would deliver it same day, they agreed to have the replacement delivered today, so i'll try the second one out to see if the outdoor piece works better. will post update

second review : received the replacement , set the outdoor remote up again , and again grossly wrong readings. sending it back for a refund.

Have had this unit running for 24 hours now, and none of the readings are correct. Humidity reads in my apartment at 26% and the humidity level icon says its OK, which is NOT in a healthy range, according to the instruction manual. Also, it says my temperature is 79 degrees, and my thermostat reads 70 degrees. Not trustworthy. Don't buy this one!

I have had this now for a year and it is inaccurate by 5 degrees Fahrenheit. I have set the a/c in the house to 78 and it shows 73. I have also tested the area this sits with an infrared thermometer and that shows the temperature to be 77.8. I even changed the battery. Who knows how accurate the humidity sensor is. Not sure how this has so many good reviews.

purchased 6 of these over the past 5 yrs. and they worked great. Purchased 4 more in 2017 but they are way off. I lined all 10 of the ones we own in a row and the old ones all read within 1 degree or % of each other but the 4 new ones are way off. 9% humidity and 7 degrees which is huge discrepancy. All read different too.Used to be a good instrument for the money.

I bought this on Dec 22 2016. It worked well for months. Today (April 24 2017), only 4 months later, I noticed it was not on/working. I swapped out the battery for a new one and it still did not work. I tried 3 different batteries (including ones from my TV remote that I know to be working) and still did not work. Sad it didnt work longer.

Item is defective and has a terrible return policy. If you want to return it, you have to pay shipping and handling. After the company receives the product, THEY decide if it is defective.My product will not display anything below 53% humidity. I purposely put it in a low humidity environment and a high humidity environment for 24 hours each. I did the salt test and it displayed 72% humidity, which is close enough, but no matter what I do, it will not read below 53%.

Don't bother. Bought it mid January and two weeks after the return window to Amazon expired, the screen is displaying fragments of the numbers, i.e., the digital display is broken. Hasn't been dropped, submerged or damaged in any way. Apparently not good quality.